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MACHINE POR GRUSHING 10E. A No. 247,712. Patented Sept. 27,1881.

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UNITED STATES PATENT OFFICE.

`- WILLIAM TUNSTILL, OF YONKERS, NEW YORK.

MACHINE FOR CRUSHING ICE.

SPECIFICATION forming part of Letters Patent No. 247,712, dated September 2*'7, 1,881.

Application filed March 22, ISSQ. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM 'IUNsTILL, of Yonkers, in the State of New York, have invented an Improvementin Machines for Crushing Ice, of which the following is a specification.

Ice-crushing machines have been made in which there is a stationaryjaw and a swinging jaw, the latter being moved by connecting rods to cranks upon the actuating-shaft, and revolvingcrushing-rollers have also been used.

Myinvention is for simplifying the construction of the machine, and for allowing the rollers to be removed for cleaning o'r for repairs Without disconnecting the other portions of the ice-crusher, thereby lessening the expense of keeping the machines in order.

In the drawings, Figure 1 is a vertical section of the machine. Fig. 2 is a front elevation, and Fig. 3 is a side view.

The side frames, a a', are similar, and between them the stationary jaw bis introduced and secured by the bolts c.

Between the lower parts of the frames a c there is the chute d or delivery-incline, down `which the ice passes after it has been crushed.

' The frames a et are made with openings at 2, for the rollers e e to be passed into place after the frames are secured together. These frames a c have halfjournal-boxes cast upon them for the reception of the shafts of the rollers e c', and the other parts of the journalboXes are made of the removable caps f, that are secured, when in place, by the bolts 3. By removing these cap-pieces the rollers e c can be introduced endwise into place or taken out for cleaning or repairs, the openings in the frames being sufficient to allow for such endwise movement of the rollers. Each roller is armed with pointed teeth that are adaptedto It is preferable that these teeth be made, as shown, with one edge nearly in the radial line and the other edge at an inclination, so that the teeth are driven more directly into the pieces of ice than they would beif made at an inclination on each side of a radial line passing through the point.

The shafts of the rollers e e are provided with the gear Wheels h, so that they revolve together, and upon one end of the shaft of the roller e there is a Iiy-wheel, a, and handle.

The moving jaw 7c is provided with arms 13,

that extend downwardly and backwardly to the bolt t', upon which the said jaw swings; and there are projecting wrist pins l at each side of the jaw, extending at their ends beyond the frames and receiving the upper ends of the connecting-rods m; and these connectin g-rods are moved by crank-pins 4 at the ends of the shaft of the roller e', such crank-pin at one end being in the gear-wheel h, and at the other end in a disk or crank upon the shaft of the roller e.

The inner faces of the jaws b and 7c are armed with penetrating teeth, and the pieces of ice to be crushed are placed in the hopper formed between the frames a a and jaws b and 7c, and the motion given to the jaw k cracks the ice, and the pieces fall down between the rollers e c', which render the crushed ice nearly uniform in size by breaking the larger pieces. The power being applied directly to the shaft at one end of one crushing-roller, and the motion for the jaw being obtained from the links and cranks of the other roller, the machine is simplified, all unnecessary appliances are dispensed with, there is but little friction, and no unnecessary loss of power, and the parts are very durable and easily repaired.

I claim as my invention- 1. In an ice-crushing machine, the combination, with the stationary jaw and the chute d,

of the side frames, a a', that are bolted to the frames at the upper part of the openings, and

the gear-wheels that connect the crushing-rollers, and the cranks and connectingrods, and the movingjaw, substantially as specified.

2. The combination, in an ice-crushing machine, of a pair of toothed crushing rollers, e c', gear-wheels h h, stationaryjaw b, swinging jaw k, connecting rods or links m, hinged at one end to the swingiugjaw, and the crankpins upon the shaft of one of the crushingrollers, to which the otherends of the links m are connected, substantially as set forth.

Signed by me this 13th day of June, A. D. 1879.

WILLIAM TUNSTILL.

Witnesses:

GEO. T. PINGKNEY,

CEAS. H. SMITH.

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